Attn: Judges: 1100837 Alternator Codes

Getting my 70 Z28 ready for National AACA meet. Putting on final touches.
We know that 1100837 is correct for 70 Z28. Looking to put on the two diget
code. I have seen some with CZ on them; which I persume is correct. Can
someone please varify. Thanks in advance.
Larry

Yes; am aware of the pulley/stamp on diverter valve. Picture I showed you
was an example of the ink stamp on the alternator. Here is a picture of my
engine awaiting the alternator ink stamp. Thanks to all. Larry